With the current GNSS infrastructure development plans, over 120 GNSS satellites (including European Galileo satellites) will provide, already this decade, continuous data, in several frequencies, without interruption and on a permanent basis. This global and permanent GNSS infrastructure constitutes a major opportunity for GNSS Scientific applications.
Scientific organisations like the International GNSS Service (IGS) follow an open data policy approach to provide GNSS data, products and services in support of different GNSS Science domains. As part of the GSSC, the ESA IGS Global Data Centre contributes to this organisation that federates over 200 self-funding agencies, universities, and research institutions in more than 100 countries, coordinating acquisition, preservation and distribution of IGS data for scientific purposes.
Simultaneously, current developments in programmes like Galileo and Copernicus as well as science missions like EUCLID or GAIA, are putting the focus on the creation of cyberinfrastructures capable of acquiring, processing and distributing massive amounts of data effectively.
GSSC Now platform aims at integrating this information from all different GNSS domains into a single repository to deliver advanced datasets and analysis services to foster GNSS Science Research.
Some relevant datasets can be found here:
- IGS – At present, IGS data represents a core set of assets supporting the scientific exploitation services implemented by GSSC.
- GREAT – Galileo gravitational Redshift Experiment with eccentric sATellites (GREAT) project has been designed to execute a general relativity experiment using the Galileo Satellites 5 and 6 to measure the gravitational redshift predicted by Einstein General Relativity Theory with the highest possible accuracy. Outputs for one week of GREAT data can be publicly downloaded from GSSC datasets.
- GOCE – The GNSS measurements of the ESA’s GOCE mission have joined the GSSC datasets. The Gravity Field and Steady-State Ocean Circulation Explorer (GOCE) mission was in orbit from March 2009 to November 2013.
- ILRS – Laser ranging activities are organized under the International Laser Ranging Service (ILRS) which provides global satellite and lunar laser ranging data and their derived data products to support research in geodesy, geophysics, Lunar science, and fundamental constants.
- SWARM – Swarm mission studies the magnetic field and its temporal evolution providing the best-ever survey of the geomagnetic field. It comprises a constellation of three satellites in near-polar low orbits to obtain better and more varied measurements. GNSS measurements of ESA’s SWARM mission are available in GSSC datasets.
Further development of these services will extend current catalogue integrating new datasets produced by GSSC activities.
You can explore all GSSC datasets here.